Improvement in steam-boiler attachments



Patented Aug. 22,1 75.

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APHEE, WASHINGTON D C Unrrun STATES- PATENT OFFICE CHARLES M. VAN TINE, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO WILLIAM P. HUNT, OF SAME PLACE.

IMPROVEMENT IN STEAM-BOILER ATTACHMENTS.

Specification forming part of Letters Patent N 0. 181,501 dated August 22, 1876,- application filed I July 1, 1876.

To all whom ztmmy concern:

Be it known that I, CHARLES M. VAN TINE,

of Boston, in the county of Suffolk and Statespring, by which it (the float) is suspended,

the eXhaust-valve being so connected in relation to the said lever as to be caused to move with every motion of the float, as the latter is effected bythe fluctuating movement of the water in the watenchamber, as described in the above-mentioned patent.

It is the object of my invention to simplify the construction of the float and its connection with the exhaust-valve and gear, and to v so connect the float rod with the lever that actuates the exhaust-valve as to admit of a limited movement of the float without effecting a corresponding movement of the exhaustvalve.

Referring to the drawings, Figure 1 represents an elevation of the upper portion of the water-chamber and valvecasing embodying my improvement, and Fig. 2 is a vertical section of the same.

A represents the upper portion of a boiler, to which the upper portion of the chamber B is attached, the lower part of the same ex: tending down into the boiler, as shown in dotted lines. 0 represents a float, arranged in the chamber that extends within the boiler.

The fioatC is attached to the rod'D, that exvided with a screw-thread, upon which is fitted a nut, a, as shown, and at a short distance below, on the said rod, is a projection or shoulder, d, so that when the float is lifted by the water in the chamber in which it is confined, the rod D isicarried up, and the shoulder at raises the lever E and causes the slide-valve e to close the exhaust-opening F; and as the water descends in the said chamher, the fioat falls, and the nut 12, coming in contact with the 'end of the lever E, draws the same down, and thus causes the port a in the slide-valve e to cover the opening F and allow the steam to escape. The nut a may be adjusted on the rod D so as to admit of any desired play of the rod D through the lever, and thus prevent the valve 6 from moving with every fluctuating movement of the float. 4

The'leverE passes through a slot in the standard K, and its up-and-d'own movement is limited by a stop, I, above, and the solid portion of the standard K below. The lever E has its fulcrum at the point H, below which projects an arm, G, the lower end of which is fitted into the top of the slide-valve e, which is moved back and forth by means of the lever E. The valvee is provided with an opening or port, a, which is brought in position over the opening F to open the valve.

It will thus be seen that, by means of the adjustable connection of the float-rod D to the lever E, I avoid the difficulty incident to a rigid connection of the rod to the lever, whereby the fluctuating movement of the float causes an undue and unnecessary movement of the exhaust-valve.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. The slide-valve e, in combination with the lever E and adjustable float-rod D, substantially as and for the purpose set'forth.

2. The combination of the float-rod D, provided with the adjusting-nut a and the shoulder d, with the lever E and the stops I K,

substantially as and for the purpose specified.

In testimony whereof I have signed my name to thls specification in presence of two subscribing witnesses.

C. M. VAN TINE. 

